Improved tutebe



B... FISH.

TWYER.

No. 75,007. Patented Mar. 3, 1868-.

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' Letters' Pat ent 1Y0. 75,007; dated ZFIarck 3, 1868.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, BENJAMiN FISH, of Mechanicsburg, in the county of Cumberland and-State of Pennsylvania, have invented a new and improved Tuyere; and-I do herebydeclare that the following is a full, clear, and exact descriptionrthereof, which will enable those skilled in the art to make and use-the same, reference being had tothe accompanying drawings, forming part of this specification.

This invention relates to a newand improved tuyere for regulating the blasts of forge-fires, and it consists 'in a peculiar construction and arrangement of parts, as hereinafter shown and described, whereby several advantages are obtained, as will be presently set forth. In the accompanying sheet-of drawings Figure 1 is a vertical section of my invention, taken in the line z x, fig. 2.

Figure 2, a vertical section of the seine, taken in the line y y, fig. 1.

hIigure 3, apla'n or top view of the same.

Similar letters of reference indicate corresponding parts.

A represents a box, which may be ofwrought or cast iron, of quadrilateral form, and gradually diminishing in diameter from its .top to its lower end, as shown in figs. 1 and 2. At the lower end of this hair there is a valve 13*, attached to a. lever C, and by actuating this lever at any time the valve-may be opened, and the contents of the box discharged. In the top of the box A there is fitted a plate, 13, which is provided with two slots, :1 b, crossing each other at right angles, as shown clearly in fig. 3. One of these slots, (1, is rather longer and wider than the other, 6, and the principal slot a has dove-tail sides and a slide, O fitted in it, to which a. rod, D, is attached, said rod extending out within convenient reach of the operator, so that the slide O may be adjusted to increase or diminish the-capacity of the slots, cub, as occasion may require.

The principal slot a may, if necessary, :be entirely closed,soth at the blast can only pass through the ends of the slot 6 at each side of slide G This is a great advantage in certain cases, as, for instance, in welding tires for wheels.

The top-plates 13 maybe of dilleront forms, difierent ones being inserted of a more or less conical term, as the nature of the wot-ls may reqnire,-but all. provided. with the slots a b, and the slide as above set forth, although the slots may vary in size. 7 I

E represents the socket into which the nozzle of'the bellows is inserted; and F represents a deflector, which is placed within the box A, and serves to direct the blast up to the slots (1 b, as will be fully understood by referring to 2, a space being allowed between the deflector and the side of box A, to admit of the escape of clinker-s and dirt. I

In the side of the box A there is u tube, G, through whichair is admitted into the box. The outer en'd'oi this tube is covered by a cap, H. which is per-foratedat its centre, and is provided with a valve, I, at its inner 'side,-suid valve being attached or suspended in such a manner, by a link, c,'thnt it will remain openwhen no blast is forced into box A. This will be fully understood by referring to fig. 2. 7

When the bellows is iii-operation, the valve I will be closed underthe rce of the blast.

By means of this automatic valve, gas cannotaccumulatem the 'box A, and. producean expbslon, as is not unfrequently the case in many of the ordinary tuyeres in use, and the cold air which is admitted into the box by the opening of said valve keeps the box cool, and prevents it,'and particularly the plate B, from burning.

I claim as -n ow, and desire to secure by Letters Patent- The improved tuyerc, herein described, .const'ructed'andarranged substantially as set forth.

BENJAMIN FISH.

Witnesses:

B. F. Arxmsox, James S. Housrorr. 

